Don't blindly supplement iron when gardenia leaves turn yellow
Abstract: This article discusses the knowledge about gardenias turning yellow and not blindly supplementing iron. Next, the site editor will introduce to the netizens.
When gardenia leaves turn yellow, don't blindly supplement iron, it may get worse!
Gardenias are liked by many people because they are extremely fragrant when in bloom. However, potted gardenias are really prone to yellow leaves. Many flower lovers, upon seeing yellow leaves on gardenias, immediately use ferrous sulfate fertilizer, but not only does it not improve, it becomes more severe. In fact, yellow leaves on gardenias are not necessarily due to iron deficiency, it is necessary to distinguish the characteristics of yellow leaves and treat them accordingly.
1. Drought-induced yellow leaves
Gardenias have lush branches and leaves and require more water in summer. If watering is not timely, drought-induced yellow leaves may appear. Drought-induced yellow leaves are mainly characterized by the lower old leaves turning yellow and falling off first, gradually spreading upwards.
If you find that the potting soil of gardenias is quite dry, you should water it in time. If necessary, soak the pot to allow the soil to absorb enough water. In summer, if watering gardenias is not timely, you can place the potted gardenias in a semi-sunny environment to slow down the rate of water consumption.
2. Soggy roots-induced yellow leaves
Many flower lovers have heard of "water gardenias" and think that gardenias love water, so they water them frequently. However, in fact, gardenias are very prone to soggy roots. Continuous damp and warm potting soil can lead to soggy roots, which manifest as partial yellowing of the leaves followed by black spots.
When soggy roots are found in gardenias, immediately strengthen environmental ventilation and loosen the potting soil. If the potting soil is very wet, it is recommended to remove the pot and place it in a shaded and well-ventilated area, waiting for the soil to dry before repotting.
3. Iron deficiency-induced yellow leaves
Don't blindly supplement iron when gardenia leaves turn yellow
Gardenias are typical acid-loving flowers. Potted gardenias often experience potting soil alkalization, which can lead to poor absorption by the gardenia roots and result in a嫩 yellow iron deficiency.
To prevent iron deficiency in gardenias, it is recommended to regularly add ferrous sulfate to adjust the soil pH when watering, or add vinegar to the water to keep the soil acidic and prevent iron deficiency.
4. Fertilizer burn-induced yellow leaves
When applying ferrous sulfate or other fertilizers to gardenias, it is also important to apply thin and frequent fertilization, avoiding the use of raw or concentrated fertilizers. Otherwise, fertilizer burn can occur in gardenias, causing the leaves to turn yellow.
Fertilizer burn-induced yellow leaves often manifest as yellowing and wilting of the leaf tips and edges, with rapid development. As the fertilizer effect diminishes, the yellow leaves will stop spreading on their own.
Once fertilizer burn is detected in gardenias, if water-soluble fertilizers have been used, promptly flush the roots with a large amount of water to alleviate it. If granular organic or slow-release fertilizers have been used, the fertilizer should be dug out and the roots flushed with water to alleviate the condition.
The above is a specific introduction to not blindly supplementing iron when gardenia leaves turn yellow, hoping to bring some flower knowledge to flower enthusiasts.